oj.uz

답안 #507739

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
507739 2022-01-13T03:05:39 Z couplefire 별자리 3 (JOI20_constellation3) C++17
100 / 100
 460 ms 106584 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long

const int N = 200005;

int n, m, arr[N], st[N][20], lg[N];
vector<int> pos[N];
int vv[N], dep[N], top, up[N][20], rt;
ll dp[N], bit[N], sum[N];
int tin[N], tout[N], tid;
vector<int> adj[N];
vector<pair<int, int>> stuff[N];

void update(int i, ll x) {
    while (i <= n) {
        bit[i] += x;
        i += i & -i;
    }
}
 
ll query(int i) {
    ll ret = 0;
    while (i) {
        ret += bit[i];
        i -= i & -i;
    }
    return ret;
}

int build(int l, int r){
    if(r<l) return -1;
    int tmp = lg[r-l+1];
    int mx = max(st[l][tmp], st[r-(1<<tmp)+1][tmp]);
    vector<int> cur_pos = {l-1};
    for(auto i = lower_bound(pos[mx].begin(), pos[mx].end(), l)-pos[mx].begin(); i<(int)pos[mx].size() && pos[mx][i]<=r; ++i)
        cur_pos.push_back(pos[mx][i]);
    cur_pos.push_back(r+1);
    vector<int> cur_child;
    for(int i = 0; i<(int)cur_pos.size()-1; ++i){
        cur_child.push_back(build(cur_pos[i]+1, cur_pos[i+1]-1));
        if(cur_child.back()==-1) cur_child.pop_back();
    }
    for(auto x : cur_child)
        adj[top].push_back(x);
    for(auto x : cur_pos)
        if(x!=l-1 && x!=r+1)
            vv[x] = top;
    dep[top] = mx;
    ++top; return top-1;
}

void dfs1(int v, int p){
    up[v][0] = p;
    for(int i = 1; i<20; ++i)
        up[v][i] = up[up[v][i-1]][i-1];
    tin[v] = ++tid;
    for(auto u : adj[v])
        dfs1(u, v);
    tout[v] = tid;
}

void dfs2(int x) {
    for (int i : adj[x]) {
        dfs2(i);
        sum[x] += dp[i];
    }
    for (auto [y, c] : stuff[x]) {
        dp[x] = max(dp[x], query(tin[y]) + c);
    }
    update(tin[x], -dp[x]);
    update(tout[x] + 1, dp[x]);
    dp[x] += sum[x];
}

int main(){
    // freopen("a.in", "r", stdin);
    cin.tie(0)->sync_with_stdio(0);
    cin >> n;
    for(int i = 1; i<=n; ++i)
        cin >> arr[i], pos[arr[i]].push_back(i);
    for(int i = 1; i<=n; ++i)
        st[i][0] = arr[i];
    for(int i = n; i>=1; --i)
        for(int j = 1; j<20; ++j)
            if(i+(1<<j)-1<=n) st[i][j] = max(st[i][j-1], st[i+(1<<(j-1))][j-1]);
    for(int i = 1; i<=n/2; ++i)
        lg[i<<1] = lg[i<<1|1] = lg[i]+1;
    rt = build(1, n); cin >> m; ll sum = 0;
    dfs1(rt, rt);
    while(m--){
        int x, y, c; cin >> x >> y >> c;
        sum += c;
        int tmp = vv[x];
        int cur = tmp;
        for(int j = 19; j>=0; --j)
            if(dep[up[cur][j]]<y) cur = up[cur][j];
        stuff[cur].push_back({tmp, c});
    }
    dfs2(rt);
    cout << sum-dp[rt] << '\n';
}

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 14552 KB Output is correct
2 Correct 8 ms 14540 KB Output is correct
3 Correct 8 ms 14424 KB Output is correct
4 Correct 8 ms 14556 KB Output is correct
5 Correct 11 ms 14428 KB Output is correct
6 Correct 8 ms 14432 KB Output is correct
7 Correct 8 ms 14540 KB Output is correct
8 Correct 8 ms 14540 KB Output is correct
9 Correct 7 ms 14540 KB Output is correct
10 Correct 9 ms 14556 KB Output is correct
11 Correct 8 ms 14540 KB Output is correct
12 Correct 7 ms 14520 KB Output is correct
13 Correct 8 ms 14540 KB Output is correct
14 Correct 7 ms 14412 KB Output is correct
15 Correct 10 ms 14424 KB Output is correct
16 Correct 9 ms 14552 KB Output is correct
17 Correct 9 ms 14472 KB Output is correct
18 Correct 10 ms 14540 KB Output is correct
19 Correct 10 ms 14424 KB Output is correct
20 Correct 7 ms 14428 KB Output is correct
21 Correct 8 ms 14540 KB Output is correct
22 Correct 10 ms 14544 KB Output is correct

Subtask #2
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 14552 KB Output is correct
2 Correct 8 ms 14540 KB Output is correct
3 Correct 8 ms 14424 KB Output is correct
4 Correct 8 ms 14556 KB Output is correct
5 Correct 11 ms 14428 KB Output is correct
6 Correct 8 ms 14432 KB Output is correct
7 Correct 8 ms 14540 KB Output is correct
8 Correct 8 ms 14540 KB Output is correct
9 Correct 7 ms 14540 KB Output is correct
10 Correct 9 ms 14556 KB Output is correct
11 Correct 8 ms 14540 KB Output is correct
12 Correct 7 ms 14520 KB Output is correct
13 Correct 8 ms 14540 KB Output is correct
14 Correct 7 ms 14412 KB Output is correct
15 Correct 10 ms 14424 KB Output is correct
16 Correct 9 ms 14552 KB Output is correct
17 Correct 9 ms 14472 KB Output is correct
18 Correct 10 ms 14540 KB Output is correct
19 Correct 10 ms 14424 KB Output is correct
20 Correct 7 ms 14428 KB Output is correct
21 Correct 8 ms 14540 KB Output is correct
22 Correct 10 ms 14544 KB Output is correct
23 Correct 11 ms 14976 KB Output is correct
24 Correct 10 ms 14900 KB Output is correct
25 Correct 12 ms 14904 KB Output is correct
26 Correct 9 ms 14952 KB Output is correct
27 Correct 12 ms 14924 KB Output is correct
28 Correct 9 ms 14924 KB Output is correct
29 Correct 9 ms 14948 KB Output is correct
30 Correct 11 ms 14924 KB Output is correct
31 Correct 12 ms 14948 KB Output is correct
32 Correct 11 ms 15200 KB Output is correct
33 Correct 10 ms 15180 KB Output is correct
34 Correct 10 ms 15072 KB Output is correct
35 Correct 10 ms 15076 KB Output is correct
36 Correct 8 ms 14668 KB Output is correct
37 Correct 8 ms 14692 KB Output is correct
38 Correct 9 ms 15332 KB Output is correct
39 Correct 9 ms 14824 KB Output is correct
40 Correct 9 ms 15180 KB Output is correct
41 Correct 9 ms 14820 KB Output is correct
42 Correct 9 ms 14796 KB Output is correct
43 Correct 9 ms 15180 KB Output is correct
44 Correct 10 ms 14796 KB Output is correct

Subtask #3
65.0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 14552 KB Output is correct
2 Correct 8 ms 14540 KB Output is correct
3 Correct 8 ms 14424 KB Output is correct
4 Correct 8 ms 14556 KB Output is correct
5 Correct 11 ms 14428 KB Output is correct
6 Correct 8 ms 14432 KB Output is correct
7 Correct 8 ms 14540 KB Output is correct
8 Correct 8 ms 14540 KB Output is correct
9 Correct 7 ms 14540 KB Output is correct
10 Correct 9 ms 14556 KB Output is correct
11 Correct 8 ms 14540 KB Output is correct
12 Correct 7 ms 14520 KB Output is correct
13 Correct 8 ms 14540 KB Output is correct
14 Correct 7 ms 14412 KB Output is correct
15 Correct 10 ms 14424 KB Output is correct
16 Correct 9 ms 14552 KB Output is correct
17 Correct 9 ms 14472 KB Output is correct
18 Correct 10 ms 14540 KB Output is correct
19 Correct 10 ms 14424 KB Output is correct
20 Correct 7 ms 14428 KB Output is correct
21 Correct 8 ms 14540 KB Output is correct
22 Correct 10 ms 14544 KB Output is correct
23 Correct 11 ms 14976 KB Output is correct
24 Correct 10 ms 14900 KB Output is correct
25 Correct 12 ms 14904 KB Output is correct
26 Correct 9 ms 14952 KB Output is correct
27 Correct 12 ms 14924 KB Output is correct
28 Correct 9 ms 14924 KB Output is correct
29 Correct 9 ms 14948 KB Output is correct
30 Correct 11 ms 14924 KB Output is correct
31 Correct 12 ms 14948 KB Output is correct
32 Correct 11 ms 15200 KB Output is correct
33 Correct 10 ms 15180 KB Output is correct
34 Correct 10 ms 15072 KB Output is correct
35 Correct 10 ms 15076 KB Output is correct
36 Correct 8 ms 14668 KB Output is correct
37 Correct 8 ms 14692 KB Output is correct
38 Correct 9 ms 15332 KB Output is correct
39 Correct 9 ms 14824 KB Output is correct
40 Correct 9 ms 15180 KB Output is correct
41 Correct 9 ms 14820 KB Output is correct
42 Correct 9 ms 14796 KB Output is correct
43 Correct 9 ms 15180 KB Output is correct
44 Correct 10 ms 14796 KB Output is correct
45 Correct 370 ms 72020 KB Output is correct
46 Correct 328 ms 71520 KB Output is correct
47 Correct 326 ms 70908 KB Output is correct
48 Correct 346 ms 72260 KB Output is correct
49 Correct 327 ms 70368 KB Output is correct
50 Correct 386 ms 70228 KB Output is correct
51 Correct 339 ms 70392 KB Output is correct
52 Correct 376 ms 71640 KB Output is correct
53 Correct 336 ms 71620 KB Output is correct
54 Correct 446 ms 95116 KB Output is correct
55 Correct 460 ms 87784 KB Output is correct
56 Correct 426 ms 84188 KB Output is correct
57 Correct 372 ms 81484 KB Output is correct
58 Correct 162 ms 41084 KB Output is correct
59 Correct 130 ms 41100 KB Output is correct
60 Correct 230 ms 106584 KB Output is correct
61 Correct 247 ms 59332 KB Output is correct
62 Correct 439 ms 87396 KB Output is correct
63 Correct 226 ms 54792 KB Output is correct
64 Correct 246 ms 57752 KB Output is correct
65 Correct 458 ms 88148 KB Output is correct
66 Correct 258 ms 54112 KB Output is correct